There's a pretty detailed set of instructions for how to take screenshots under debian online. The first paragraph suggests that debian supports an inbuilt screenshot facility:
"Print Screen" key to ...

Every time I want to take an EPS screenshot with KSnapshot it is grayscaled even though the real screenshot contains colors. This only happens when I choose the EPS format in KSnapshot, not with the ...

I would like to do screenshots of the active monitor (the one on which my mouse is) or screenshots of always the same monitor ; and not the two monitors at the same time.
Is there any command/option ...

I have to (scriptly) take screenshots of windows, some of which may be partially or fully hidden by other windows. Of course, in such a case the screenshot is useless, and I'd rather print a warning.
...

What data should one erase from log files, error messages etc., if posting them as a screenshot so as not to expose sensitive information? As I have little knowledge about this topic, I can vividly ...

When I press Print Scrn in XFCE and choose to save it, the automatically generated and offered file name is like Screenshot - 141012 - 02:21:10.png (Screenshot - DDMMYY - HH:mm:SS.png).
I hate to use ...

I need to place some screenshots of GNOME applications, such as the file manager, in a book. The book will be printed in black and white, and, although shades of gray are okay, it is best that I avoid ...

I want to connect a TI-84 Plus Calculator to my PC and take screenshots of the calculator display. Under windows this is possible using the TI-connect software. However is there also a way to do this ...

I'd like to get a list of all of the apps (across all users) on my machine that are talking to the X server. What's the most reliable way to do that? Find the socket X runs on and lsof for connections ...

How can I record all activity on the screen for a certain amount of time? I know about tools like xwd that capture a still image; can they be extended to record video? I'd prefer not using any fancy ...